Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 to 60 NM Marine Forecast
| Overnight...East Winds 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: East 6 Feet At 6 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Tuesday...East Winds 15 To 20 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. Wave Detail: East 5 Feet At 6 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Tuesday Night...East Winds 15 To 20 Knots, Decreasing To Near 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. Wave Detail: East 4 Feet At 5 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Wednesday...East Winds Near 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Wednesday Night...East Winds Near 15 Knots, Decreasing To 10 To 15 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Thursday...East Winds 10 To 15 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Thursday Night...East To Southeast Winds Near 10 Knots. Seas 2 To 3 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Friday...East To Southeast Winds Near 10 Knots. Seas Around 2 Feet. A Slight Chance Of Showers. |
| Friday Night...East To Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Saturday...East To Southeast Winds Near 10 Knots. Seas 1 To 2 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Saturday Night...East Winds 10 To 15 Knots. Seas 1 To 2 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Area Forecast Discussion National Weather Service Key West FL 1011pm EDT Monday May 18 2026 Issued at 1015pm EDT Monday May 18 2026 A high pressure system north of Bermuda continues to support moderate to fresh breezes. In terms of radar, KBYX scans highlighted pulses of showers, and an occasional thunderstorm, across the Florida Keys waters. The evening 00Z KKEY sounding sampled a PWAT (Precipitable Water) near, but just below, the 90th percentile value. Instability exists across the Keys, one only need go outside to notice how muggy the environment feels. Dew points are still in the mid 70s across the island chain. Everything hints at another humid, warm night across the Keys. The absence of organized showers may be attributed to the lack of a lifting mechanism. The 00Z sounding sampled nearly unidirectional easterly winds below 700 mb. Closer to the surface, breezes along the reef have remained moderate to fresh for the past 24 hours. Current trends suggest persistence is the correct choice for the forecast over the Keys tonight, thus no changes were made to the forecast package. Marine Issued at 1015pm EDT Monday May 18 2026 Small Craft Should Exercise Caution for all Florida Keys nearshore and offshore waters. From synopsis, surface high pressure centered north of Bermuda will continue to promote moderate to fresh east to southeast breezes through the next couple of days. Highest breezes will prevail through Tuesday evening. Breezes then undergo a very slow slackening process before the weekend with peaks expected during the evenings and lulls during the day. Rain and thunder chances will remain above normal through much of the week. NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...None. |
Key West FL Radar
Southeast Radar